Fourdrinier wire stretcher



Nov. 23 1926.

' D. ST'AUFENBERGER I FouRDRINIBR WIRE STRETCHER Fild June 14, 1926 2 Sheets-Shee t 1 5 Patented Nov. 23, 1926.

uni'rsn stares arsr tries.

DANIEL STAUFENBERGER, OF EAST NEVJARK, KEV] JERSEY, ASSIGNOR TO EMILY DURKIN, O13 KEARNY, NEW JERSEY.

FOUBDBINIER villi-E STRETCI-IER.

Application filed June 14,

This invention relates to certain new and useful improvements in Fourdrinier wire stretchers and the primary object of the invention is to provide a stretching machine for the sheet of fine mesl wire that forms a part of a Fourdrinier paper making machine for the purpose of removing slack over the entire area thereof and to produce a fabric of the desired tension.

The in'iportant object of this invention is to provide a novel anchoring means for the ends of the Fourdrinier wire during the stretching operation thereof whereby the ends are securely held within a longitudinal groove formed in a stretching roller in a manner to permit ready removal of the ends and the completely stretched wire fabric from the machine.

\Vith the above and other objects in view 0 that will become apparent as the nature of the invention is better understood, that same consists of the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and clain'ied.

In the drawings, wherein like reference characters designate corresponding parts throughout the several views,

Figure 1 is a side elevational view, partly broken away of a Fourdrinier wire stretching machine constructed in accordance with the present invention,

Figure 2 is a longitudinal sectional view of one of the stretching rollers,

Figure 3 is a side elevational view, partly broken away and shown in sections of the other stretching roller,

Figure 4 is a cross sectional viewof the stretching roller shown in Fig. 3 with which roller the ends of the Fourdrinier wire are associated, and

Figure 5 is a fragmentary top plan View of the operating mechanism for the movable roller of the pair.

The use of Fourdrinier wire being thoroughly familiar to those skilled in the art to which this invention relates is by the present invention evenly and constantly stretched over its entire area to reach the desired tension and this invention relates to the idea of anchoring the ends of Fourdrinier wire to a stretching roller with the wire in loop formation. As shown in Fig.

1, the stretching machine comprises a frame 1 supported upon legs 2 with longitudinally Serial No. 115,954.

extending parallel guide rails 3 upon the upper side of the frame, bearing brackets at at o e end of the frame 1 having side opening bearings for the stretcher roller 5, the bracket bearings i being rigidly sup ported upon the frame while bearing brackets movably mounted upon the same and guided by the rails 3 have side opening bearings for receiving the stretching roller 7. shown in 1, a sheet of Fourdrinier wire 8 is looped around the roller 7 with the ends thereof detachably anchored in a longitudinal groove formed in the roller 5.

As shown in detail in Fig. 2, the stretchingroller 7 comprises a cylinder 9 with a block 10. set into each end thereof and provided with a central bearing 11 for the stub shafts 12 that are ren'iovably journaled in tle side opening bearings in the bearing blocks 6.

The stretching roller 5 is shown in detail in Figs. 8 and l and comprises a cylinder 13 havin a block 1% set in each end thereof with a bee ing 15 for the stub shafts 16 that are reniovably journaled in the side opening bearl in the bearing bracket 1. A ring 1? is into the cylinder 13 of the roller 5 intermediate the ends thereof for purposes presently to appear and is anchored in position at the point 18.

T he cylinder 13 is longitudinally slotted as at 19 while the endblocks i l and r'ng 17 are longitudinally grooved as at 20 in regis 'trati .1 with the cylinder slot 1. A Shown 1110::8 clearly in Fig. i, angle strips 21 are set into the slot 19 and grooves 20 and are ancl'iored to the bottom walls of the grooves as at 22. The opposite parallel sides of the angle strips 21 carry a plurality of spaced pins 23 that are directed toward each other with a passage 21 separating their adjacent ends. A steel rod or the like is threaded through the opposite ends of the Fourdrinier wire sheet 8 and suitably anchored therein with the wire sheet looped around the roller 7 as shown in Fig. 1. The steel rods are .then respectively passed through the passage 2 1 between adjacent ends of the pins 28 with the pins entering interstices in the wire and with the steel rods positioned inwardly of the associated group of pins 23. i Vith the ends of the wire so retained, the bracket beaing 6 is then shifted over the guide rails 3 for the purpose of stretching the Fourdrinier wire and the stretching means or devices for shifting the bearing brackets 3 are shown more clearly in Figs. 1 and Bearings 25 carried by the fran'ie 1 support a transverse shaft 26 that is rotated by the hand wheel 27 and each end of the shaft 26 outwardly of the bearings 25 carries a beveled gear 28. Alined with each bearing bracket 6 and fixed to the frame 1 is a forked bracket 29 that supports its upper end a non-rotatable screw shaft 30 slidable in the forked bracket and splined in the bearing 31 at the outerxend of the screw shaft. The inner end of the screw shaft 30 carries a block 32 that is rigidly connected to the bracket bearing 6. It will therefor be seen that upon rotating the shaft 26 by the hand wheel 27, and with the bevel gear 28 upon the shaft 26 meshing with the bevel gear 33 threaded on the shaft 30 between the arms of the forked bracket 29 that said screw shaft 30 will be longitudinally shifted to move the bearing brackets-6 over the frame 1.

While there is herein shown and described the preferred embodiment of the present in" vention, it is' nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What is claimed as new is 1. In a Fourdrinier wire stretching machine, a pair of rollers, a support for each roller, one of said support-s being slidably mounted on the machine, one of said rollers having a longitudinal groove therein and means within the groove for the retention of the ends of the wire sheet.

2. In a Fourdrinier wire stretching ma-' .which the retention means is mounted.

1. In a I ourdrinier wire stretching machine, a pair of rollers, a support for each roller, one of said supports being shdably mounted on the machine, one of said rollers having a longitudinal groove therein and pins carried by the opposite walls of the groove with the adjacent ends of the opposed pins spaced for cooperation with the ends of the wire sheet to retain the ends in the groove and angle strips secured in the rollergroove and upon which the pins are mounted.

In a Fourdrinier wire stretching ma chine, a pair of rollers, a support for each roller, one of said supports being slida-bly mounted on the machine, one of said rollers having a longitudinal groove therein, means within. the groove for the retention of the ends of the wire sheet and angle strips secured in the roller groove and upon which the retention means is mounted, a pair of the walls of the angle strips being seated on the bottom wall of the groove and in parallel with the retention means carried by the other walls of the angle strips. 7

6. In a Fourdrinier wire stretching machine, a pair of rollers, a support for each roller, one of said supports being sli'dably mounted on the machine, one of said rollers having a longitudinal groove therein, pins carried by the opposite walls of the groove with the adjacent ends of the opposed pins spaced for cooperation with the ends of the wire sheet to retain the ends in the groove and angle strips secured inthe roller groove and upon which the pins are mounted, a pair of the walls of the angle strips being seated on the bottom wall of the groove and in parallel with the pins carried by the other walls of the angle strips.

In testimony whereof I affix my signature.

DANIEL STAUFENBERGER. 

